10 USB Flash Drives Roundup. Page 11

The manufacturers have made some progress since we last tested USB flash drives in our labs. Almost all major brands have mastered dual-channel memory controllers and large-capacity memory chips. Today we will look at popular USB drives with 1GB storage capacity from Apacer, A-Data, Kingston, OCZ and Transcend.

Intel IOMeter: Average Read & Write Response Time

The average read/write response time is measured in a 10-minute test to read/write 512-byte data blocks with a request queue of 1.

The first diagram shows the read response time. You can see two groups of drives here. Some drives have a very low response time and they have previously had the highest sequential read speeds. The drives from the second group have much worse results.

There are two groups, too, in the write response diagram. Some of the flash drives have almost the same and low write response time. These drives have also been among the leaders in the sequential write test.